JP5194725B2 - Broadcast receiver - Google Patents

Description

  The present invention relates to a broadcast receiving apparatus configured to receive a television broadcast and output it to a monitor so as to be visible from the outside.

  Conventionally, in a broadcast receiver configured to receive a television broadcast and output it to a monitor so that it can be viewed from the outside, the image quality of the video displayed on the monitor is set according to the conditions such as the environment in which the monitor is installed. Function is provided. Therefore, various apparatuses and methods have been proposed in order to set the image quality with good convenience.

For example, when receiving a recording reservation setting, the user inputs image quality parameters such as brightness, contrast, saturation, and hue, records them on a hard disk or an optical disk, and plays back a recorded program. A broadcast signal recording / reproducing apparatus that changes an image signal to be output to an audio signal processing circuit based on an image quality parameter is disclosed (see Patent Document 1).
JP 2006-222773 A

  However, in the broadcast signal recording / playback apparatus, when setting a recording reservation, the user needs to input image quality parameters such as brightness, contrast, saturation, and hue. Setting the condition may not be easy because it is difficult to determine whether the set image quality condition is appropriate.

  That is, when the image quality parameter is set by the user, video information corresponding to the set image quality parameter is displayed on the monitor. In order to determine whether the set condition is appropriate, It is necessary to display various images on the monitor for confirmation, and it is difficult to determine whether or not the set image quality conditions are appropriate.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a broadcast receiving apparatus capable of easily setting appropriate image quality conditions.

In order to achieve the above object, a broadcast receiving apparatus of the present invention is a broadcast receiving apparatus configured to receive a television broadcast and to be output to a monitor so as to be visible from the outside, and receiving means for receiving the television broadcast And an external operation input, and based on the received operation input, a condition that defines the image quality when displaying the video corresponding to the video information received through the receiving unit on the monitor Image quality condition setting means for setting image quality conditions, standard image storage means for storing standard image information for evaluating image quality in advance, and when image quality conditions are set by the image quality condition setting means, stored in the standard image storage means Read out the standard image information, and displays the standard image information on the preset first area of the monitor based on the preset image quality condition, and the standard image information Based on the set image quality condition by the quality condition setting means, the preset monitor is characterized by comprising, and the standard image display means for displaying the second region different from the first region.

In the broadcast receiving apparatus having the above configuration, the image quality adjusting means for adjusting the image quality of the video information displayed on the monitor based on the image quality condition set by the image quality condition setting means, and the OSD without going through the image quality adjusting means. And a direct display means for displaying an image on the monitor based on an (On-Screen Display) function, and the standard image display means sends the standard image information to the first area via the direct display means. In addition to displaying, the standard image information may be displayed in the second area via the image quality adjusting means.

Further, in the broadcast receiving apparatus having the above-described configuration, the standard image display unit displays a video corresponding to the video information received via the receiving unit, which is set in advance on the monitor, and includes the first area and the second area. It may be displayed in a different third area .

Further, in the broadcast receiving apparatus having the above-described configuration, the standard image information is a color bar image that is referred to when setting either one of hue or color density, or a multiburst signal that is referred to when setting sharpness. (Multi-Burst Signal) to the corresponding image, and, among the monochrome bar image to be referred to when setting one of contrast and brightness, may also including I image information corresponding to at least one image.

According to the present invention , the television broadcast is received by the receiving means, the operation input from the outside is accepted, and the video corresponding to the video information received through the receiving means is displayed based on the accepted operation input. An image quality condition, which is a condition for defining the image quality when displayed on the monitor, is set. Further, standard image information for evaluating image quality is stored in advance in the standard image storage means, and when image quality conditions are set, the standard image information stored in the standard image storage means is read out and set in advance. Based on the image quality condition, the image is displayed in the first area set in advance on the monitor, and the standard image information is set in the second area different from the first area, based on the image quality condition set in the standard image information. Since it is displayed, it is possible to easily set an appropriate image quality condition.

  That is, when the image quality condition is set, the standard image information stored in the standard image storage means is read out and displayed in the preset first area of the monitor based on the preset image quality condition. In addition, since the standard image information is set in advance on the monitor based on the set image quality condition and displayed in the second area different from the first area, the user can select the image quality of the standard image displayed in the second area. Therefore, it is sufficient to set the image quality condition so as to match the image quality of the standard image displayed in the first area. Therefore, it is possible to easily set an appropriate image quality condition.

According to the present invention, the image quality adjusting means adjusts the image quality of the video information displayed on the monitor based on the set image quality condition. On the other hand, the direct display means displays an image on the monitor based on the OSD (On-Screen Display) function without going through the image quality adjustment means. Then, the standard image information is displayed in the first area via the direct display means, and the standard image information is displayed in the second area via the image quality adjustment means. Can be set easily.

  That is, the standard image information is displayed in the first area via the direct display means for displaying an image on the monitor based on the OSD function without going through the image quality adjusting means, and based on the set image quality conditions. Since the standard image information is displayed in the second area via the image quality adjustment means for adjusting the image quality of the video information displayed on the monitor, the standard image based on the set image quality condition and the preset image quality condition A standard image based on the above can be displayed on a monitor with a simple configuration.

  That is, since it has a direct display means for displaying video on the monitor based on the OSD function without going through the image quality adjusting means, a standard image based on the image quality conditions set in advance via this direct display means can be simply configured. Can be displayed on the monitor.

According to the present invention, the video corresponding to the video information received via the receiving means is set in advance on the monitor and displayed in a third area different from the first area and the second area. In addition to the standard image based on the set image quality condition and the standard image based on the preset image quality condition, the image quality condition can be set by referring to the video corresponding to the received video information. The image quality condition can be set more easily.

In addition, according to the present invention, the standard image information includes a color bar image that is referred to when setting one of hue and color density, and a multiburst signal (Multi-multiple signal) that is referred to when setting sharpness. Since the image information corresponding to at least one of the image corresponding to Burst Signal) and the monochrome bar image referred to when setting one of contrast and brightness is included, hue and color density In addition, at least one image quality adjustment among sharpness, contrast, and brightness can be set more easily.

  That is, for example, when the standard image information includes a color bar image that is referred to when either one of the hue and the color density is set, the color bar image based on the set hue and the color density. Since the color bar image based on the preset color shade and color density is displayed on the monitor, the user can change the color shade and color density of the color bar image displayed in the second area to the first color range. Since it is only necessary to set the hue and the color density so as to match the hue and color density of the color bar image displayed in the area, it is possible to easily set an appropriate hue and color density. .

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of a digital broadcast receiver 1 according to the present invention. A digital broadcast receiver 1 (corresponding to a broadcast receiver) is communicably connected to a remote controller (= remote controller: hereinafter referred to as “remote controller”) 2 via infrared communication.

  The digital broadcast receiver 1 receives an operation input from the user via the remote controller 2, receives a television broadcast, and outputs video and audio to the display 184 and the speaker 163, respectively. The MPU 11 and the RAM 12 ROM 13, operation unit 14, receiving unit 15, audio output unit 16, MPEG2 decoding unit 17, image output unit 18, and infrared communication unit 19.

  The remote controller 2 (corresponding to a part of the image quality setting condition means) includes various keys, accepts an operation input from the user through pressing of the key, generates an infrared signal corresponding to the operation input, and digitally This is output to the broadcast receiver 1 (infrared communication unit 19).

  An MPU (Micro Processing Unit) 11 controls the operation of the entire digital broadcast receiver 1. A RAM (Random Access Memory) 12 stores information such as audio information and video information in a readable and writable manner. A ROM (Read Only Memory) 13 stores a control program for operating the MPU 11 and the like.

  The operation unit 14 receives various operations such as power ON / OFF operation and channel selection. The receiving unit 15 receives and demodulates a television broadcast, and includes an antenna unit 151, a tuner unit 152, an A / D conversion unit 153, a demodulation unit 154, and a TS demultiplexer 155.

  The antenna unit 151 receives a television broadcast wave. The tuner unit 152 selects a broadcast of a preset channel from the television broadcast wave received by the antenna unit 151. The A / D conversion unit 153 converts an output signal (= analog signal) from the tuner unit 152 into digital information. The demodulator 154 demodulates the output information from the A / D converter 153. A TS (Transport Stream) demultiplexer 155 separates and outputs the output information demodulated by the demodulator 154 for each type.

  The audio output unit 16 outputs audio corresponding to the television broadcast received by the receiving unit 15, and includes a D / A conversion unit 161, an audio signal output unit 162, and a speaker 163. The D / A converter 161 converts the audio information (= digital information) output from the TS demultiplexer 155 into an analog signal. The audio signal output unit 162 outputs the audio signal converted into an analog signal by the D / A conversion unit 161. The speaker 163 outputs audio corresponding to the audio signal output from the audio signal output unit 162.

  An MPEG (Motion Picture Experts Group) 2 decoding unit 17 decodes the video information output from the TS demultiplexer 155 into video information before compression.

  The image output unit 18 outputs the video information decoded by the MPEG2 decoding unit 17, and includes an NTSC encoding unit 181, a video signal output unit 182, a direct display unit 183, and a display 184. An NTSC (National Television Standards Committee) encoding unit 181 converts the video information decoded by the MPEG2 decoding unit 17 and the standard image information stored in the RAM 12 (standard image storage unit 122 described later) into an NTSC video signal, respectively. And an image signal.

  The video signal output unit 182 (corresponding to a part of the image quality adjusting means) is respectively provided for the NTSC video signal and the image signal output from the NTSC encoding unit 181 with respect to the MPU 11 (image quality setting execution unit 112 described later). The image quality adjustment process is executed in accordance with the instruction from, and the video signal and image signal subjected to the image quality adjustment process are output to the display 184.

  The direct display unit 183 (corresponding to the direct display means) is stored in the RAM 12 (standard image storage unit 122 described later) according to an instruction from the MPU 11 (standard image display unit 113 described later) without using the video signal output unit 182. The stored standard image is output to the display 184 based on the OSD (On-Screen Display) function. That is, the direct display unit 183 displays the standard image stored in the RAM 12 (standard image storage unit 122 described later) on the display 184 without performing image quality adjustment processing.

  The display 184 (corresponding to a monitor) includes an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), and the like, and a video signal output from the video signal output unit 182 or the direct display unit 183 and a video corresponding to the video signal Is displayed.

  The infrared communication unit 19 receives various operations from the remote controller 2 such as power ON / OFF operation, channel selection, various settings of the digital broadcast receiver 1 (setting of image quality conditions for video displayed on the display 184, etc.). is there.

  Next, the operation when the digital broadcast receiver 1 receives a broadcast will be described. First, the transmitted digital broadcast wave is received by the antenna unit 151. When the channel selection operation is accepted via the remote controller 2 (or the operation unit 14), the tuner 152 switches the transponder (Transponder) received. The received digital broadcast wave is converted into digital information by the A / D converter 153 and demodulated by the demodulator 154.

  The digital broadcast wave is transmitted as a TS (Transport Stream) packet from the transmission side (transmission station). The TS packet includes video information, audio information, control information, and the like. These pieces of information are separated and output by the TS demultiplexer 155 and stored in the RAM 12. The audio information read from the RAM 12 is converted into an analog signal by the D / A converter 161, and the audio is output from the speaker 163 through the audio signal output unit 162.

  Also, the video information read from the RAM 12 is decoded into video information before compression by the MPEG2 decoding unit 17, converted into an NTSC video signal by the NTSC encoding unit 181, and image quality adjustment processing by the video signal output unit 182. And the video is displayed on the display 184.

  FIG. 2 is a block diagram showing an example of the configuration of the main part of the digital broadcast receiver 1 according to the present invention. The MPU 11 of the digital broadcast receiver 1 functionally includes an image quality condition setting unit 111, an image quality setting execution unit 112, and a standard image display unit 113. The RAM 12 functionally includes a setting condition storage unit 121 and a standard image storage unit 122.

  Here, the MPU 11 functions as functional units such as an image quality condition setting unit 111, an image quality setting execution unit 112, and a standard image display unit 113 by reading and executing a control program stored in advance in the ROM 13 shown in FIG. In addition, the RAM 12 is caused to function as functional units such as the setting condition storage unit 121 and the standard image storage unit 122.

  Among various data stored in the RAM 12, ROM 13 shown in FIG. 1, etc., data that can be stored in a removable recording medium is, for example, a hard disk drive, optical disk drive, flexible disk drive, silicon disk drive, cassette medium reader In this case, the recording medium is, for example, a hard disk, an optical disk, a flexible disk, a CD (Compact Disk), a DVD (Digital Versatile Disk), a semiconductor memory, or the like.

  The setting condition storage unit 121 stores the image quality condition information set by the image quality condition setting unit 111. The image quality condition information stored in the setting condition storage unit 121 is read by the image quality setting execution unit 112. Here, the image quality conditions include hue, color density, sharpness, contrast, and brightness.

  The standard image storage unit 122 (corresponding to a standard image storage unit) stores standard image information for evaluating image quality in advance. The standard image information stored in the standard image storage unit 122 is read by the standard image display unit 113.

  Here, the standard image information stored in the standard image storage unit 122 sets a color bar image (see FIG. 3A) to be referred to when setting either one of hue and color density, and sharpness. An image (see FIG. 3B) corresponding to a multi-burst signal (Multi-Burst Signal) referred to in the case of a monochrome bar image (see FIG. 3B) and a monochrome bar image referred to when setting either one of contrast or brightness 3 (c)).

  The color bar image, the image corresponding to the multiburst signal, and the monochrome bar image stored in the standard image storage unit 122 are images displayed on the display 184 when the digital broadcast receiver 1 is manufactured. This is a standard image used for image quality inspection.

  FIG. 3 is an explanatory diagram illustrating an example of an image corresponding to the standard image information stored in the standard image storage unit 122. (A) is a color bar image, (b) is an image corresponding to a multiburst signal, and (c) is a monochrome bar image. As shown in (a), a color bar image is a band-shaped image having colors corresponding to eight preset colors (here, for the sake of convenience, the color difference is indicated by the type of shading). It is arranged in the direction.

  As shown in (b), the image corresponding to the multi-burst signal has a horizontal stripe pattern in which the frequency of the video signal is 0.5 MHz, 1 MHz, 2 MHz, 3 MHz, 3.58 MHz, and 4.2 MHz, respectively, in the horizontal direction. It is arranged. As shown in (c), the monochrome bar image is a band-shaped monochrome image corresponding to preset four-tone brightness (here, for the sake of convenience, the color difference is indicated by the type of shading). They are arranged in the horizontal direction.

  Again, the functional configuration of the MPU 11 will be described with reference to FIG. The image quality condition setting unit 111 (corresponding to a part of the image quality condition setting unit) accepts an operation input from the user via the remote controller 2 and receives it via the reception unit 15 based on the accepted operation input. The image quality condition, which is the condition for defining the image quality when displaying the video corresponding to the video information on the display 184, is set, and the set image quality condition information is recorded (= written) in the setting condition storage unit 121. . Here, the image quality conditions set by the image quality condition setting unit 111 include hue, color density, sharpness, contrast, and brightness.

  The image quality setting execution unit 112 (corresponding to a part of the image quality adjustment unit) reads the set image quality condition information from the setting condition storage unit 121 and sets the image quality condition when the image quality condition setting unit 111 sets the image quality condition. The signal output unit 182 is caused to execute image quality adjustment processing corresponding to the set image quality condition.

  The standard image display unit 113 (corresponding to a standard image display unit) reads out the standard image information stored in the standard image storage unit 122 and is preset when the image quality condition is set by the image quality condition setting unit 111. Based on the image quality conditions (here, the image quality conditions set when the digital broadcast receiver 1 is manufactured and shipped), a first area set in advance on the display 184 (the first standard image display shown in FIG. 4). And the standard image information is set in advance on the basis of the image quality condition set by the image quality condition setting unit 111, and is set in advance in a second area (second area shown in FIG. 4) different from the first area. It is displayed on the standard image display unit 303).

  The standard image display unit 113 displays the standard image information in the first area (the first standard image display unit 302 shown in FIG. 4) via the direct display unit 183, and via the video signal output unit 182. Standard image information is displayed in the second area (second standard image display unit 303 shown in FIG. 4). Further, the standard image display unit 113 displays a video corresponding to the video information received through the receiving unit 15 through the video signal output unit 182 in advance in the display 184, the first area and the second area. It is displayed in a different third area (video display unit 301 shown in FIG. 4).

  FIG. 4 is a screen diagram illustrating an example of the image quality confirmation screen 300 displayed on the display 184 by the standard image display unit 113. On the image quality confirmation screen 300, a video display unit 301 is displayed at the top of the screen, a first standard image display unit 302 is displayed at the bottom left side of the screen, and a second standard image display unit 303 is displayed at the bottom right side of the screen. ing.

  The video display unit 301 displays a video corresponding to the video information received via the receiving unit 15 via the video signal output unit 182 (= based on the image quality condition set by the image quality condition setting unit 111). Is.

  The first standard image display unit 302 receives the standard image information stored in the standard image storage unit 122 via the direct display unit 183 (= the image quality set when the digital broadcast receiver 1 is manufactured and shipped. Based on the condition).

  The second standard image display unit 303 displays the standard image information stored in the standard image storage unit 122 via the video signal output unit 182 (= based on the image quality condition set by the image quality condition setting unit 111). Is.

  In addition, the first standard image display unit 302 and the second standard image display unit 303 have color bar images 302a and 303a shown in FIG. 3A and images corresponding to the multiburst signals shown in FIG. 302b and 303b, monochrome bar images 302c and 303c shown in FIG. 3C are displayed.

  The user sets the image quality condition so that the image displayed on the second standard image display unit 303 of the image quality confirmation screen 300 shown in FIG. When manufactured and shipped, images and videos with a set image quality (= appropriate image quality) can be displayed on the display 184.

  For example, the color bar image 303a based on the hue and color density set by the image quality condition setting unit 111 and the color bar image 302a based on the preset hue and color density are displayed on the display 184. The user sets the hue and color density of the color bar image 303a displayed on the second standard image display unit 303 to the hue and color density of the color bar image 302a displayed on the first standard image display unit 302. Since it is only necessary to set the hue and color density so as to match, it is possible to easily set the appropriate hue and color density.

  Also, the video corresponding to the video information received via the receiver 15 is displayed on the video display unit 301 via the video signal output unit 182 (= based on the image quality condition set by the image quality condition setting unit 111). Since it is displayed, the image quality desired by the user can be set for the video being viewed.

  FIG. 5 is a flowchart showing an example of the operation of the digital broadcast receiver 1 (mainly the MPU 11). Here, for convenience, a case where standard image information is stored in advance in the standard image storage unit 122 will be described. First, it is determined whether an image quality condition is set by the image quality condition setting unit 111 (S101). If it is determined that the image quality condition is not set (NO in S101), the process is in a standby state.

  If it is determined that the image quality condition is set (YES in S101), the image quality condition setting unit 111 records the image quality condition information set in step S101 in the setting condition storage unit 121 (S103). Then, the image quality setting execution unit 112 performs image quality adjustment processing corresponding to the image quality condition set in step S103 via the video signal output unit 182 (S105).

  Next, the video corresponding to the video information received via the receiving unit 15 by the standard image display unit 113 is displayed on the video display unit 301 (third region) shown in FIG. 4 of the display 184 via the video signal output unit 182. (S107). Next, the standard image display unit 113 displays the standard image information on the second standard image display unit 303 (corresponding to the second area) shown in FIG. 4 via the video signal output unit 182 (S109). Then, the standard image display unit 113 displays the standard image information on the first standard image display unit 302 (corresponding to the first region) shown in FIG. 4 via the direct display unit 183 (S111), and the processing is completed. Is done.

  In this way, the television broadcast is received by the receiving unit 15, the operation input from the user is received via the remote controller 2, and the video received via the receiving unit 15 based on the received operation input. An image quality condition, which is a condition for defining the image quality when displaying the video corresponding to the information on the display 184, is set. Also, standard image information for evaluating image quality is stored in advance in the standard image storage unit 122, and when image quality conditions are set, the standard image information stored in the standard image storage unit 122 is read out and set in advance. Based on the set image quality conditions (here, the image quality conditions set when the digital broadcast receiver 1 is manufactured and shipped), the first standard image display unit 302 set in advance on the display 184 (see FIG. 4). ) And the standard image information is displayed on the preset second standard image display unit 303 (see FIG. 4) of the display 184 based on the set image quality condition. It can be set easily.

  That is, when the image quality condition is set, the standard image information stored in the standard image storage unit 122 is read, and the preset first standard image display on the display 184 is set based on the preset image quality condition. In addition to being displayed on the unit 302 (see FIG. 4), the standard image information is displayed on the preset second standard image display unit 303 (see FIG. 4) of the display 184 based on the set image quality condition. The user can set the image quality condition so that the image quality of the standard image displayed on the second standard image display unit 303 matches the image quality of the standard image displayed on the first standard image display unit 302. Appropriate image quality conditions can be set easily.

  Also, the image quality setting execution unit 112 adjusts the image quality of the video information displayed on the display 184 via the video signal output unit 182 based on the set image quality condition. On the other hand, the direct display unit 183 displays an image on the display 184 based on the OSD (On-Screen Display) function without using the video signal output unit 182. The standard image information is displayed on the first standard image display unit 302 (see FIG. 4) via the direct display unit 183, and the standard image information is displayed on the second standard image display unit 182 via the video signal output unit 182. Since the image is displayed on the unit 303 (see FIG. 4), it is possible to easily set an appropriate image quality condition with a simple configuration.

  That is, the standard image information is transferred to the first standard image display unit 302 (see FIG. 4) via the direct display unit 183 that displays an image on the display 184 based on the OSD function without using the video signal output unit 182. The standard image information is displayed on the second standard image display unit 303 (see FIG. 4) via the video signal output unit 182 that is displayed and adjusts the image quality of the video information displayed on the display 184 based on the set image quality condition. The standard image based on the set image quality condition and the standard image based on the preset image quality condition can be displayed on the display 184 with a simple configuration.

  That is, since the direct display unit 183 that displays the video on the display 184 based on the OSD function without the video signal output unit 182 is provided, the standard based on the image quality condition set in advance via the direct display unit 183 is provided. The image can be displayed on the display 184 with a simple configuration.

  Further, since the video corresponding to the video information received via the receiving unit 15 is displayed on the preset video display unit 301 (see FIG. 4) of the display 184, a standard image based on the set image quality condition is displayed. In addition to the standard image based on the preset image quality condition, the image quality condition can be set with reference to the video corresponding to the received video information, so that the appropriate image quality condition can be set more easily. be able to.

  In addition, the color bar image that is referred to when the standard image information sets one of the hue and the color density (see FIG. 3A and the color bar images 302a and 303a shown in FIG. 4). An image corresponding to a multi-burst signal referred to when setting sharpness (see images 302b and 303b corresponding to the multi-burst signal shown in FIG. 3B and FIG. 4), and , Because it includes image information corresponding to a monochrome bar image (see FIG. 3C and monochrome bar images 302c and 303c shown in FIG. 4) referred to when setting one of contrast and brightness. Image quality adjustments including color depth, sharpness, contrast and brightness can be set more easily.

  That is, for example, the color bar image 303a based on the set hue and color density and the color bar image 302a based on the preset hue and color density are displayed on the display 184 (see FIG. 4). Therefore, the user uses the color tone and color density of the color bar image 303a displayed on the second standard image display unit 303 as the color tone and color density of the color bar image 302a displayed on the first standard image display unit 302. Therefore, it is only necessary to set the hue and the color density so as to coincide with each other. Therefore, it is possible to easily set an appropriate hue and color density.

The present invention can also be applied to the following forms.
(A) In the present embodiment, the case where the broadcast receiving apparatus is the digital broadcast receiver 1 has been described. However, the broadcast receiving apparatus may receive a television broadcast and output it to the display 184 so as to be visible from the outside. It ’s fine. For example, the broadcast receiving apparatus may be configured to receive an analog broadcast, or may be configured to receive an analog broadcast and a digital broadcast.

  (B) In the present embodiment, the case where the monitor is the display 184 disposed in the digital broadcast receiver 1 has been described. However, the monitor is configured as a device separate from the digital broadcast receiver 1. But it ’s okay. For example, the monitor may be a monitor disposed in a personal computer or the like.

  (C) In the present embodiment, the case where the MPU 11 functions as the image quality condition setting unit 111, the image quality setting execution unit 112, the standard image display unit 113, and the like has been described, but the image quality condition setting unit 111, the image quality setting execution unit 112, In addition, at least one functional unit in the standard image display unit 113 may be configured by hardware such as a circuit.

  (D) In the present embodiment, the case where the standard image information stored in the standard image storage unit 122 includes a color bar image, an image corresponding to a multiburst signal, and a monochrome bar image has been described. The standard image information stored in the unit 122 may include at least one of a color bar image, an image corresponding to a multiburst signal, and a monochrome bar image.

  (E) In the present embodiment, the standard image display unit 113 includes a color bar image 302a, an image 302b corresponding to a multiburst signal, and a first standard image display unit 302 that displays a monochrome bar image 302c. 303a, the second standard image display unit 303 that displays the image 303b corresponding to the multi-burst signal, and the monochrome bar image 303c have been described on the display 184. A first standard image display unit 302 that displays at least one of the image 302a, the image 302b corresponding to the multiburst signal, and the monochrome bar image 302c, the color bar image 303a, and the image 303b corresponding to the multiburst signal. , And at least one of the monochrome bar images 303c A second standard image display unit 303 for displaying an image, the may be a form to be displayed on the display 184.

  For example, when setting either one of hue and color density, the standard image display unit 113 includes a first standard image display unit 302 that displays the color bar image 302a and a first bar that displays the color bar image 303a. The two standard image display unit 303 may be displayed on the display 184. In this case, the processing is simplified and the color bar image 302a and the color bar image 303a can be displayed in a large size, so that the visibility is improved.

These are block diagrams which show an example of the digital broadcast receiver which concerns on this invention. These are block diagrams which show an example of a structure of the principal part in the digital broadcast receiver which concerns on this invention. These are explanatory drawings which show an example of the image corresponding to the standard image information stored in the standard image storage unit. These are screen figures which show an example of the image quality confirmation screen displayed on a display by a standard image display part. These are the flowcharts which show an example of operation | movement of a digital broadcast receiver (mainly MPU).

Explanation of symbols

1 Digital broadcast receiver (broadcast receiver)
11 MPU
111 Image quality condition setting section (part of image quality condition setting means)
112 Image quality setting execution unit (part of image quality adjustment means)
113 Standard image display section (standard image display means)
12 RAM
121 setting condition storage unit 122 standard image storage unit (standard image storage unit)
15 Receiver (Receiving means)
18 Image output unit 181 NTSC encoding unit 182 Video signal output unit (part of image quality adjusting means)
183 Direct display (direct display means)
184 Display (Monitor)
2 Remote control (part of image quality condition setting means)

Claims (3)

And receiving means for receiving a tape revision broadcasting,
Based on an operation input received from the outside, and the image quality condition setting means for setting the image quality conditions you define the image quality when an image corresponding to an image information received via said receiving means to display the monitor,
Standard image storage means for storing in advance standard image information for evaluating image quality;
If the quality condition set by the image quality condition setting means, based on pre-set image quality condition by reading the standard image information previously stored in the standard image memory means, preset the monitor A standard image that is displayed in the first area and the standard image information is displayed in a second area different from the first area set in advance on the monitor based on the image quality condition set by the image quality condition setting means. Display means;
Image quality adjusting means for adjusting the image quality of the video information displayed on the monitor based on the image quality condition set by the image quality condition setting means;
Direct display means for displaying an image on the monitor based on an OSD (On-Screen Display) function without going through the image quality adjusting means;
Equipped with a,
The standard image display means displays the standard image information in the first area via the direct display means, and displays the standard image information in the second area via the image quality adjustment means. A broadcast receiving apparatus characterized by the above. The standard image display means displays a video corresponding to the video information received through the receiving means in a third area that is preset in the monitor and different from the first area and the second area. The broadcast receiving apparatus according to claim 1. The standard image information includes a color bar image that is referred to when setting one of hue and color intensity, and an image corresponding to a multi-burst signal (Multi-Burst Signal) that is referred to when setting sharpness. And image information corresponding to at least one of the monochrome bar images referred to when either one of contrast and brightness is set. 4. Broadcast receiving device.

Images